Finding the Fourth Proportional to 138,515.36, 207,689.81 and 54,174.92
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Solution
The fourth proportional to 138,515.36, 207,689.81 and 54,174.92 is: 81,229.82
Step by Step Solution
- Step 1: Write the proportion equation
138,515.36 : 207,689.81 = 54,174.92 : x - Step 2: Convert to fraction form
138,515.36/207,689.81 = 54,174.92/x - Step 3: Cross multiply
138,515.36x = 207,689.81 × 54,174.92 - Step 4: Simplify right side
138,515.36x = 11,251,577,532.24 - Step 5: Solve for x
x = 11,251,577,532.24/138,515.36 - Step 6: Final answer
x = 81,229.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.